Filter changed in PhysicsCollider component for one Entity affects all of them

Unity Engine
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1

Hello,

I am currently experimenting with the ECS character controller (1.2.4).
I am developing a zombie survivor type of game.
I have however hit a little snag:
When my hero kills a zombie, I want to play the death animation before I destroy the entity, however I don’t want my hero to target it any longer:
I use a overlap sphere to find enemies in proximity, the cast a ray for the bullet interaction.
For both of these things I use a Collision filter:
BelongsTo: player
CollidesWith: Zombie

I define those on the physics shape assigned to my prefab.

So, the way I was going about this was to add the PhysicsCollider component to my query when in the DeathHandling system,

Then I Set a new CollisionFilter to the collider:

unsafe {
        if (physicsCollider.ColliderPtr != null) {
          CapsuleCollider* collider = (CapsuleCollider*) physicsCollider.ColliderPtr;
          
          collider->SetCollisionFilter(new CollisionFilter {
            BelongsTo = (uint)PhysicsLayers.Dead,
            CollidesWith = ~0u,
          });
        }
      }

However this changes to every unit present in my scene, not only the one I called it on.
I am sure it is called only on that single zombie because I was logging the entity index to verify.

I am not sure if this is a bug, or it is the way it is supposed to be.
Being the collider a pointer, could it be that they all point to the same one? if so, why?

Can anybody suggest a solution or an alternative method to achieve my main goal:
still have the character on the scene but prevent any interaction with the player?

Thanks
Kind Regards

Joe

2

So, I found a toggle in the Physics shape to force unique, which solved my first problem.
However, I have another issue:
If one of the children of the entity I am changing collision for have a collider (physics shape) I get the following error:
ArgumentException: FixedString128Bytes: Truncation while copying “CollisionFilter of a compound collider is not a union of its children. You must call CompoundCollider.RefreshCollisionFilter() to update the root filter after changing child filters.”
Unity.Collections.FixedString128Bytes.CheckCopyError (Unity.Collections.CopyError error, System.String source) (at ./Library/PackageCache/com.unity.collections/Unity.Collections/FixedString.gen.cs:4646)

Any ideas?